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Gotham 

g213

Page 22

SYSTEM CONNECTION DIAGRAM 1:
One Gotham to 
Home Theater Receiver or 
Home Theater Preamp/Processor

Most home theater receivers and 

preamp/processors provide a single 
(mono) subwoofer output. When 
connecting a mono subwoofer output 
to your Gotham, you will only use the 
Gotham’s “Left  or Mono” input. 

Two connection types are available 

for connecting the Gotham to your 
home theater system: balanced (XLR or 
1/4-inch TRS connector) and unbalanced 
(RCA-type connector). Balanced 
connections provide superior noise 
rejection and ensure proper grounding 
between components. If your receiver or 
processor has balanced outputs, we highly 
recommend that you use them. 

In the connection diagram at left , 

balanced connections are shown as solid 
lines, unbalanced connections are shown 
dotted. You will only use one of these 
input connection methods (not both).

SUB 

REAR 

REAR CENTER 

FRONT 

FRONT 

PRE OUT 

 

 

 

PROCESSOR

 (BALANCED OUTPUTS) 

RECEIVER / PROCESSOR

  (UNBALANCED OUTPUTS) 

OR 

OUTPUTS 

g213

GOTHAM REAR CONTROLS

 (MASTER)

WARNING!

 TURN OFF THE GOTHAM AND ALL OTHER EQUIPMENT IN THE 

SYSTEM BEFORE MAKING OR CHANGING ANY CONNECTIONS! 

WARNING

Summary of Contents for Gotham g213

Page 1: ...g213 Owner s Manual...

Page 2: ...urces such as radiators heat registers stoves fireplaces or other devices which produce heat Do not place candles on top of or near the subwoofer 10 Power sources The subwoofer should only be connecte...

Page 3: ...fallen or liquid has been spilled into the subwoofer c the subwoofer has been exposed to rain d the subwoofer does not appear to operate normally or exhibits a marked change in performance e the subwo...

Page 4: ...d signal processing technologies specifically aimed at delivering exceptional low frequency performance Your Gotham combines these core disciplines within a beautifully crafted package to deliver an u...

Page 5: ...employing patented feedback technology was created This advanced design is capable of unclipped output voltage equivalent to 3800 watts of RMS power when referenced to the nominal loudspeaker impedanc...

Page 6: ...MAY RESULT IN PRODUCT DAMAGE AND OR INJURY WARNING FAILURE TO HANDLE A GOTHAM CORRECTLY DURING UNPACKING AND PLACEMENT CAN RESULT IN EXPENSIVE DAMAGE WHICH IS NOT COVERED UNDER WARRANTY IMPORTANT YOU...

Page 7: ...d away from a corner or wall the room modes are excited less which can alter the sound at your listening seat Be sure to experiment with both your listening seat position and subwoofer position to fin...

Page 8: ...R COMPROMISED SEATING POSITIONS Results in weaker uneven bass performance BEST SEATING POSITIONS Most accurate bass performance COMPROMISED SEATING POSITIONS More intense but less accurate bass perfo...

Page 9: ...m at diagonally opposite corners of the room or at the center points of opposing walls as shown at right Experimentation with subwoofer and listener placement is recommended to achieve the best result...

Page 10: ...listening area can be achieved using four subwoofers placing one at the midpoint of each of the four walls although using two or three subwoofers can be almost as good Experimentation with subwoofer...

Page 11: ...remove the rear split foam insert and place in the carton 12 Tilt the subwoofer in the opposite direction towards its silver heatsink to remove the remaining split foam insert and place in the carton...

Page 12: ...ts the front control panel of a Gotham subwoofer A R O page 14 15 Power page 14 Input Mode page 15 Level Mode page 15 Master Level page 16 Lights page 16 LP Filter page 16 LP freq Hz page 16 e l f tri...

Page 13: ...trols and Connectors The labeled Figure below depicts the rear panel of a Gotham subwoofer Balanced Inputs page 18 Unbalanced Inputs page 19 IEC Style AC Connector page 21 Output to Slave Connector pa...

Page 14: ...e theater at the main listening seat greatly improving the in room low frequency response Calibration of the A R O system is fully automated and takes only a few minutes to accomplish Please consult t...

Page 15: ...the center of the Calibrate button will light and remain illuminated These settings are stored by the Gotham and will remain in memory even if power is disconnected During the ARO test sequence the C...

Page 16: ...the signal path 12 dB sets the roll off slope of the low pass filter to a 12 dB per octave slope Butterworth alignment 24 dB sets the roll off slope of the low pass filter to a 24 dB per octave slope...

Page 17: ...h is immediate it compliments the operation of the Phase control and cannot be replaced by it When placing your Gotham in the room experiment with the Polarity switch before adjusting the Phase contro...

Page 18: ...processors Separate left and right input jacks are provided for systems without a dedicated mono subwoofer connection This typically applies to two channel audio equipment Appropriate balanced cables...

Page 19: ...odern multi channel receivers and preamplifier processors Separate left and right RCA type input jacks are provided for systems without a dedicated mono subwoofer connection This typically applies to...

Page 20: ...osition and you need not concern yourself with this section any further If your installation incorporates two or more Gothams you will designate one Gotham as the Master and all others in the system a...

Page 21: ...rries any signal processing selected on the Master Gotham including the Master Level setting and A R O processing to further Gothams operating in Slave mode From Gothams operating in Slave mode the Ou...

Page 22: ...type connector Balanced connections provide superior noise rejection and ensure proper grounding between components If your receiver or processor has balanced outputs we highly recommend that you use...

Page 23: ...s balanced outputs we highly recommend that you use them to connect to the Gotham designated as the master In the connection diagram at left balanced connections are shown as solid lines unbalanced co...

Page 24: ...comfortable running your main speakers full range you can split your preamplifier s output signals using appropriate Y connectors in place of the active crossover shown in the diagram Two connection...

Page 25: ...nnection types are available for connecting the Gothams to your two channel audio system balanced XLR or 1 4 inch TRS connector and unbalanced RCA type connector Balanced connections provide superior...

Page 26: ...speaker setup menu properly set all speaker distances to the primary listening seat including the subwoofer s distance Use a tape measure to determine these distances time coherence is important If mu...

Page 27: ...connected directly to your receiver or preamp processor is indicating Master on its Input Mode lights and that all other units are indicating Slave on their Input Mode lights If not you will need to a...

Page 28: ...ons on page 29 of this manual 2 Polarity and Phase Adjustment It is often helpful to have a second person operating these controls so that you can easily hear the changes from the primary listening se...

Page 29: ...emove the calibration microphone from its protective pouch and connect its cable to the mini XLR jack on the Gotham s front control panel NOTE A R O Calibration is only possible when the included JL A...

Page 30: ...ntrols to their previously determined settings before the A R O calibration run and re tweak the subwoofer output level as described in Step 1 Level Setting on page 28 Since the A R O will smooth the...

Page 31: ...til these artifacts disappear Will my electric bill be high if I leave the Gotham in Auto mode When in Auto mode the Gotham amplifier is only powered up when a significant signal is detected on the in...

Page 32: ...We recommend Nanowax because in our testing it has performed best in creating a lustrous swirl free result This product can be ordered online at www eagleone com or purchased wherever detailing suppli...

Page 33: ...fy the position of the E L F Trim knob Hums or other unusual noises from your Gotham 1 See Input Mode discussion on page 20 of this manual especially if any upstream components cables etc have recentl...

Page 34: ...Gotham g213 Page 34...

Page 35: ...ective product with new or remanufactured product at no charge Any applicable implied warranties are limited in duration to the period of the express warranty as provided herein beginning with the dat...

Page 36: ...On or Automatic Signal Sensing Light Modes Off On or Dim Low Pass Filter Mode Off 12 dB per octave or 24 dB per octave Low Pass Filter Cutoff Frequency Variable from 30 Hz 130 Hz Polarity 0 or 180 de...

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